Switch-stand



(No Model.)

J. JERVIS SWITCH STAND.

Patented r. 27, 1886.

No. 340,719. A

N. PETERS Phnwumn n w. Wnhinglnn. 04 r;

UNITED STATES PATENT OFFICE.

JOHN JERVIS, OF ST. PAUL, M INNESOTA.

SWITCH-STAND.

SPECIFICATION forming part of Letters Patent No. 340,719, dated April27, 1886.

Application filed June 25, 1884. Serial No. 137,087. (No model.)

To all whom it mag concern:

Be it known that I, J OHN J ERVIS, a citizen of the United States,residing at St. Paul, in the county of Ramsey, State ofMinnesota, haveinvented a new and useful Improveinent in Switch-Stands, of which thefollowing is a specification.

In the accompanying drawings, Figure 1 is a vertical view of the switchstand, looking across the track. Fig. 2 is a side view of the same,showing the operative parts. Fig. 3 is a plan view in cross-sectionthrough the line as 00, Fig. 1. Fig. 4 is a plan view of the leverwheel,with certain parts of the switch-stand omitted.

The switch'stand is constructed of removable parts, with a top plate, D,and base-plate 0, connected together by four uprights or legs, E. Thelegs E consist of rods 6, inclosed in gas-pipes, which form sleeves d,and serve to keep the plates 0 D equidistant. The rods are secured tothe plates in any suitable manner. In the present instance they areriveted to the upper plate, D, and secured to the lower plate, 0, bynuts b. The sleeves d, by keeping the plates equidistant, permit theends of the crank-shaft F to have free movement in their bearings. Acrank-shaft, F, is mounted in the switch-stand, having its lower crankend, G, resting in a socket, S, in plate 0, and its upper end projectingthrough plate D. Before mounting the shaft F in position an ordinaryswitch-rod, H, with attaching socket J, is readily connected with shaftF by an eye, T, by slipping the eye T on shaft F until it rests justabove crank-arm G, thus dispensing with any securing-pin or otherfastening device. The shaft F being of a curved form, as shown, inconnection with its crank-arm G, gives a better throw to theswitch-rail. Furthermore, owing to the curved form of the crank-shaftthe switch'rod can be readily slipped on and off the same in case ofrepair, and, being located above crank-arm G, cannot become detached.

Upon the upper projecting end of the shaft F is mounted a wheel, I,which serves as the lever for throwing the switch. The wheel I issecured to the shaft F by a key, B, and is provided with a lockinglatch,L, mounted on apivot, P, in suitable bearings, Q. Thedownwardly-projecting portion Z of the latch L normally projects throughan opening, R, in wheel I, and its end rests against and slides upon theplate D when the lever is operated. The opening R serves as a brace forthe latch L and removes the strain from its pivot-bearing.

Upon the periphery of the plate D are slots or notches M, with which thenose Z of the latch L engages and locks the lever in position. It willbe seen by this construction that the latch L operates automatically tolock the switch, and does not require any manipulation by the switchman, except to raise the nose Z out of the slot M to unlock the switch.

If it should be desired to make several throws of the switch insuccession without looking it, the latch L can be thrown clear back outof the way, its outer end resting against the target-staff. Thetarget-staff O has a sleeve, K, screwed on its lower end, into whichsleeve projects the upper end of shaft F, which is secured thereto by abolt, a, thus uniting shafts O and F together.

N N N indicate in dotted lines in Fig. 3 the different positionsoccupied by crank-arm G.

By employing the wheel-lever I, directly connected with thetarget-shaft, and crankshaft operating the switchrod, the advantages ofthis improvement will be seen at once.

The device is simpler, less liable to get out of repair, is stronger,andhas greater resistingpower.

The lever may be operated at any side of the switch-stand in anemergency.

In case of repair the parts, being easily dc tachable, may be readilyreplaced.

hat I claim, and desire to secure by Letters Patent, is-

1. Thecombination, with the'switch-rod, of the vertical curvedcrank-shaft, the switchrod adapted to be slipped on and off of thecrankshaft above its crank-arm, substantially as described.

2. The combination, with the curved crankshaft having the lever-wheelmounted thereon, carrying the automatic gravity lockingpawl, of the topplate of the switch-stand, having a series of slots with which thelocking-pawl engages, substantially as described.

3. The combination, with the vertical crankshaft, ourved as shown anddescribed, of the TOO target-staffdetachably connected thereto, sub 1tom plates having the ends of the vertical 'Io stantially as described.

4. The combination, with the switch-stand constructed with removableparts,of the curved vertical crank-shaft having the switch-rod removablyconnected thereto by a sliding connection above the crank-arm of thevertical shaft, substantially as described.

5. The combination, with the top and hotcurved crank-shaft removably journaled therein, of the rods connecting the plates together andinclosed in sleeves, the bottom plate being removable, substantially asdescribed.

JOHN JERVIS. WVitnesses:

R. B. GALUSHA, O. J. A. MORRIS.

